Key holder



FIG. 1 is a top view;

FIG. 2 is a bottom view;

FIG. 3 is a side view;

FIG. 4 is a side view;

FIG. 5 is an end view;

FIG. 6 is an end view; and,

FIG. 7 is an top perspective view.

The ornamental design for a key holder, as shown.